Slack Software Developer reviews

4.6

99% would recommend to a friend

(60 total reviews)
avatar

Stewart Butterfield

99% approve of CEO

88% positive business outlook

Software Developer employees have rated Slack with 4.6 out of 5 stars, based on 60 company reviews on Glassdoor. This indicates that most Software Developer professionals have an excellent working experience there. Slack is rated in line with the average (within 1 standard deviation) by Software Developer professionals compared to other employers within the Informationstechnologie industry (3.9 stars).

Reviews by job title

60 reviews
5.0
Jun 26, 2025

Good company!

Recommend
CEO approval
Business Outlook

Pros

Great engineering culture. Supportive coworkers.

Cons

Retention policy is not great. Refreshers are very rarely given.

5.0
Apr 18, 2025
Recommend
CEO approval
Business Outlook

Pros

- great people and great product - always lots of opportunities to work on new product areas and improve the product

Cons

- had trouble with lateral movement - Salesforce seems to be trying to integrate more and more into the company

Viewing 1 - 3 of 60 Reviews

Glassdoor has 1,226 Slack reviews submitted anonymously by Slack employees. Read employee reviews and ratings on Glassdoor to decide if Slack is right for you.